초록 ▼

A process for shape selective hydrocarbon conversion involves contacting a hydrocarbon feedsteam under conversion conditions with a modified catalytic molecular sieve which has been modified by being pre-selectivated with a first silicon source, then steamed. The feedstream may also contain a second

A process for shape selective hydrocarbon conversion involves contacting a hydrocarbon feedsteam under conversion conditions with a modified catalytic molecular sieve which has been modified by being pre-selectivated with a first silicon source, then steamed. The feedstream may also contain a second silicon source which is a high efficiency para-xylene selectivating agent. The method for modifying the molecular sieve is also described.

대표청구항 ▼

A method for modifying a catalytic molecular sieve comprising pre-selectivating the molecular sieve with a first silicon-containing compound selected from the group consisting of silicones, tetraalkoxy silanes, and organoamine silane polymers, calcining and subsequently steaming at about 200°C. to a

A method for modifying a catalytic molecular sieve comprising pre-selectivating the molecular sieve with a first silicon-containing compound selected from the group consisting of silicones, tetraalkoxy silanes, and organoamine silane polymers, calcining and subsequently steaming at about 200°C. to about 400°C.